DE102004041066A1 - Highly integrated semiconductor device with silicide layer and associated manufacturing method - Google Patents
Highly integrated semiconductor device with silicide layer and associated manufacturing method Download PDFInfo
- Publication number
- DE102004041066A1 DE102004041066A1 DE102004041066A DE102004041066A DE102004041066A1 DE 102004041066 A1 DE102004041066 A1 DE 102004041066A1 DE 102004041066 A DE102004041066 A DE 102004041066A DE 102004041066 A DE102004041066 A DE 102004041066A DE 102004041066 A1 DE102004041066 A1 DE 102004041066A1
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- Prior art keywords
- gate electrode
- layer
- region
- semiconductor substrate
- silicide layer
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 102
- 229910021332 silicide Inorganic materials 0.000 title claims abstract description 55
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000758 substrate Substances 0.000 claims abstract description 69
- 125000006850 spacer group Chemical group 0.000 claims abstract description 44
- 229910052723 transition metal Inorganic materials 0.000 claims description 26
- 150000003624 transition metals Chemical class 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 4
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 2
- 239000007943 implant Substances 0.000 claims 4
- 150000002739 metals Chemical class 0.000 claims 2
- 238000007669 thermal treatment Methods 0.000 claims 2
- 239000010410 layer Substances 0.000 description 116
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/24—Alloying of impurity materials, e.g. doping materials, electrode materials, with a semiconductor body
-
- H01L29/6653—
-
- H01L29/665—
-
- H01L29/6656—
-
- H01L29/6659—
-
- H01L29/66628—
-
- H01L29/7833—
-
- H01L29/7835—
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- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Thin Film Transistor (AREA)
Abstract
Die Erfindung bezieht sich auf ein hochintegriertes Halbleiterbauelement mit einem Halbleitersubstrat (100) mit einem Sourcebereich und einem Drainbereich (150a, 150b), von denen wenigstens einer einen schwach dotierten und einen stark dotierten Bereich (130a, 130b, 140a, 140b) umfasst, einer Gateelektrode (110), die auf einem vorgegebenen Bereich des Halbleitersubstrats angeordnet ist, und einer Silicidschicht (160), die auf der Gateelektrode und wenigstens dem stark dotierten Bereich (140a, 140b) des Source- und/oder des Drainbereichs ausgebildet ist. DOLLAR A Erfindungsgemäß ist eine epitaxiale Schicht (120) auf vorgegebenen Bereichen des Halbleitersubstrats beidseits der Gateelektrode derart angeordnet, dass die Gateelektrode um eine vorgegebene Tiefe in der epitaxialen Schicht vertieft ist, wobei der Sourcebereich und der Drainbereich in der epitaxialen Schicht und vorgegebenen oberen Bereichen des Halbleitersubstrats unterhalb der epitaxialen Schicht ausgebildet sind. Ein Offset-Abstandshalter (115) ist entlang wenigstens einer Seitenwand der Gateelektrode ausgebildet und isoliert die Gateelektrode von dem Source- und dem Drainbereich. Die Silicidschicht (160) ist auch auf dem schwach dotierten Bereich des Source- und/oder Drainbereichs ausgebildet. DOLLAR A Verwendung z. B. für hochintegrierte Halbleiterspeicherbauelemente.The invention relates to a highly integrated semiconductor device having a semiconductor substrate (100) with a source region and a drain region (150a, 150b), at least one of which comprises a lightly doped region and a heavily doped region (130a, 130b, 140a, 140b) A gate electrode (110) disposed on a predetermined region of the semiconductor substrate and a silicide layer (160) formed on the gate electrode and at least the heavily doped region (140a, 140b) of the source and / or drain regions. DOLLAR A According to the invention, an epitaxial layer (120) is disposed on predetermined regions of the semiconductor substrate on both sides of the gate electrode so that the gate electrode is recessed by a predetermined depth in the epitaxial layer, wherein the source region and the drain region in the epitaxial layer and predetermined upper regions of the Semiconductor substrate are formed below the epitaxial layer. An offset spacer (115) is formed along at least one sidewall of the gate electrode and isolates the gate electrode from the source and drain regions. The silicide layer (160) is also formed on the lightly doped region of the source and / or drain region. DOLLAR A use z. B. for highly integrated semiconductor memory devices.
Description
Die Erfindung bezieht sich auf ein hochintegriertes Halbleiterbauelement nach dem Oberbegriff des Anspruchs 1 und auf ein Verfahren zur Herstellung eines solchen hochintegrierten Halbleiterbauelements.The The invention relates to a highly integrated semiconductor device according to the preamble of claim 1 and to a method for the production such a highly integrated semiconductor device.
Mit zunehmendem Integrationsgrad von Halbleiterbauelementen nehmen die Fläche und die Linienbreite der Halbleiterbauelemente ab, was zu einer Zunahme eines Zwischenverbindungswiderstands und eines Kontaktwiderstands der Halbleiterbauelemente führen kann. Eine derartige Zunahme des Widerstands reduziert die Betriebsgeschwindigkeit der Halbleiterbauelemente.With increasing degree of integration of semiconductor devices take the area and the line width of the semiconductor devices, resulting in a Increase of interconnection resistance and contact resistance lead the semiconductor devices can. Such an increase in resistance reduces the operating speed the semiconductor devices.
Um den Zwischenverbindungswiderstand und den Kontaktwiderstand zu reduzieren, wurde bereits ein Verfahren zur Bildung einer selbstjustierten Silicidschicht auf einer Gateelektrode, einem Sourcebereich und einem Drainbereich eines Metall-Oxid-Halbleiter(MOS)-Transistors vorgeschlagen, siehe z.B. die Literaturstelle "Silicon processing for the VLSI Era", Bd. 4, S. 604.Around reduce interconnect resistance and contact resistance has already been a method for forming a self-aligned silicide layer on a gate electrode, a source region and a drain region of a metal-oxide-semiconductor (MOS) transistor proposed, see e.g. the reference "Silicon Processing for the VLSI Era ", Vol. 4, p. 604.
Ein
herkömmliches
hochintegriertes Halbleiterbauelement mit einer solchen selbstjustierten
Silicidschicht und ein Verfahren zu seiner Herstellung werden nachfolgend
unter Bezugnahme auf die
Bezugnehmend
auf
Bezugnehmend
auf
Mit
zunehmendem Integrationsgrad des Halbleiterbauelements nehmen jedoch
die Flächen des
Sourcebereichs
Des
Weiteren nehmen mit der reduzierten Linienbreite der Gateelektrode
in dem hochintegrierten Halbleiterbauelement die Tiefen des Sourcebereichs
Wenn
die Silicidschicht
Der Erfindung liegt als technisches Problem die Bereitstellung eines hochintegrierten Halbleiterbauelements der eingangs genannten Art so wie eines zugehörigen Herstellungsverfahrens zugrunde, mit denen sich die oben genannten Schwierigkeiten herkömmlicher hochintegrierter Halbleiterbauelemente dieser Art wenigstens teilweise vermeiden lassen.The invention is based on the technical problem of providing a highly integrated semiconductor device of the type mentioned above as well as an associated manufacturing method with which at least partially avoided the above-mentioned difficulties conventional conventional semiconductor devices of this type sen.
Die Erfindung löst dieses Problem durch die Bereitstellung eines hochintegrierten Halbleiterbauelements mit den Merkmalen des Anspruchs 1 sowie eines zugehörigen Herstellungsverfahrens mit den Merkmalen des Anspruchs 12.The Invention solves this problem by providing a highly integrated semiconductor device with the features of claim 1 and an associated manufacturing method with the features of claim 12.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.advantageous Further developments of the invention are specified in the subclaims.
Vorteilhafte, nachfolgend beschriebene Ausführungsformen der Erfindung sowie das zu deren besserem Verständnis oben erläuterte herkömmliche Ausführungsbeispiel sind in den Zeichnungen dargestellt. Hierbei zeigen:Advantageous, Embodiments described below of the invention and the conventional embodiment explained above for better understanding thereof are shown in the drawings. Hereby show:
Die Erfindung wird nunmehr vollständiger unter Bezugnahme auf die begleitenden Zeichnungen beschrieben, in denen bevorzugte Ausführungsformen der Erfindung gezeigt sind. Die Abmessungen von Elementen in den Zeichnungen sind übertrieben dargestellt, um die Erkennbarkeit zu steigern und eine klare Beschreibung zu fördern.The Invention will now be more fully under With reference to the accompanying drawings, in which preferred embodiments of the invention are shown. The dimensions of elements in the Drawings are exaggerated presented to increase the visibility and a clear description to promote.
Bezugnehmend
auf
Ein
Sourcebereich
Eine
Silicidschicht
Eine
isolierende Zwischenschicht
Nunmehr wird ein Verfahren zur Herstellung des hochintegrierten Halbleiterbauelements beschrieben.Now is a method for producing the highly integrated semiconductor device described.
Bezugnehmend
auf
Als
nächstes
wird die resultierende Struktur zur Bildung von SEG-Schichten
Bezugnehmend
auf
Bezugnehmend
auf
Bezugnehmend
auf
Bezugnehmend
auf
Demgemäß wird die
Silicidschicht
Die
Silicidschicht
Bezugnehmend
auf
Unabhängig davon,
mit welcher der obigen Varianten der bisherige Herstellungsprozess
erfolgt ist, wird dann bezugnehmend auf
Gemäß dieser
Ausführungsform
wird die Silicidschicht
Da
die Silicidschicht
Da
der Sourcebereich
Da
eine nicht gezeigte selbstjustierte Kontaktstelle (SAC) auf dem
Sourcebereich
Als
nächstes
werden die Gateelektrode
Gemäß der dritten
Ausführungsform
der Erfindung sind die Unterseiten des Sourcebereichs
Das hochintegrierte Halbleiterbauelement der dritten Ausführungsform kann die gleichen Effekte erzielen wie jene der vorigen Ausführungsformen und reduziert des Weiteren einen durch einen parasitären Widerstand verursachten Latch-up-Effekt.The highly integrated semiconductor device of the third embodiment can achieve the same effects as those of the previous embodiments and further reduces one caused by parasitic resistance Latch-up.
Dazu
wird nach der Bildung des selbstjustierten Abstandshalters
Die
zweite Silicidschicht
Da
die zweite Silicidschicht
Wie vorstehend beschrieben, ist die Silicidschicht mit der ausreichenden Dicke, um als ohmsche Kontaktschicht zu fungieren, gleichmäßig auf den LDD-Bereichen ausgebildet. Demgemäß ist ein Kontaktwiderstand nicht erhöht, selbst wenn die LDD-Bereiche aufgrund einer aus der Bildung der Kontaktöffnung resultierenden Fehljustierung freigelegt sind. Außerdem ist eine ausreichende Kontaktierungstoleranz des hochintegrierten Halbleiterbauelements sichergestellt, da die LDD-Bereiche als Kontaktfläche verwendet werden können.As As described above, the silicide layer is sufficient Thickness to act as ohmic contact layer, evenly on the LDD areas formed. Accordingly, a contact resistance not increased, even if the LDD areas due to a resulting from the formation of the contact opening Maladjustment are exposed. In addition, a sufficient Contacting tolerance of the highly integrated semiconductor device ensured because the LDD areas used as the contact area can be.
Außerdem ist der Widerstand der LDD-Bereiche reduziert und es wird verhindert, dass ein parasitärer Widerstand zunimmt, da die Silicid schicht mit der vorgegebenen Dicke auf den LDD-Bereichen mit der relativ geringen Störstellenkonzentration ausgebildet ist.Besides that is the resistance of the LDD areas is reduced and it is prevented that a parasitic Resistance increases because the silicide layer with the given thickness on the LDD regions with the relatively low impurity concentration is trained.
Da der Sourcebereich und der Drainbereich in der SEG-Schicht ausgebildet sind, die sich von dem Substrat erhebt, wird eine ausreichende Übergangstiefe erzielt. Demzufolge kann eine ausreichende Menge an Silicium während der Bildung der Silicidschicht bereitgestellt werden, wobei der Sourcebereich und der Drainbereich mit der vorgegebenen Tiefe gewährleistet sind, wodurch ein Übergangsleckstrom reduziert wird.There the source region and the drain region are formed in the SEG layer which rises from the substrate will have a sufficient junction depth achieved. Consequently, a sufficient amount of silicon during the Formation of the silicide layer can be provided, wherein the source region and ensures the drainage area with the predetermined depth are, creating a transient leakage current is reduced.
Claims (22)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020030058287A KR100546369B1 (en) | 2003-08-22 | 2003-08-22 | High integrated semiconductor device with silicide layer securing contact margin and method for manufacturing the same |
KR10-2003-0058287 | 2003-08-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004041066A1 true DE102004041066A1 (en) | 2005-03-24 |
DE102004041066B4 DE102004041066B4 (en) | 2016-03-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102004041066.6A Expired - Lifetime DE102004041066B4 (en) | 2003-08-22 | 2004-08-19 | Highly integrated semiconductor device with silicide layer and associated manufacturing method |
Country Status (6)
Country | Link |
---|---|
US (2) | US7098514B2 (en) |
JP (1) | JP2005072577A (en) |
KR (1) | KR100546369B1 (en) |
CN (1) | CN100431152C (en) |
DE (1) | DE102004041066B4 (en) |
TW (1) | TWI243423B (en) |
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JPH11312804A (en) * | 1998-04-28 | 1999-11-09 | Sony Corp | Semiconductor device and its manufacture |
JP2000269495A (en) * | 1999-03-18 | 2000-09-29 | Toshiba Corp | Semiconductor device and its manufacture |
US6255703B1 (en) | 1999-06-02 | 2001-07-03 | Advanced Micro Devices, Inc. | Device with lower LDD resistance |
KR100361533B1 (en) * | 2001-03-29 | 2002-11-23 | Hynix Semiconductor Inc | Method for fabricating semiconductor device |
US6465313B1 (en) * | 2001-07-05 | 2002-10-15 | Advanced Micro Devices, Inc. | SOI MOSFET with graded source/drain silicide |
US6902980B2 (en) * | 2003-06-05 | 2005-06-07 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of fabricating a high performance MOSFET device featuring formation of an elevated source/drain region |
-
2003
- 2003-08-22 KR KR1020030058287A patent/KR100546369B1/en active IP Right Grant
-
2004
- 2004-06-08 US US10/862,996 patent/US7098514B2/en not_active Expired - Lifetime
- 2004-08-03 TW TW093123176A patent/TWI243423B/en not_active IP Right Cessation
- 2004-08-06 JP JP2004231605A patent/JP2005072577A/en active Pending
- 2004-08-19 DE DE102004041066.6A patent/DE102004041066B4/en not_active Expired - Lifetime
- 2004-08-23 CN CNB2004100576614A patent/CN100431152C/en not_active Expired - Lifetime
-
2006
- 2006-07-18 US US11/488,239 patent/US7338874B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006015075A1 (en) * | 2006-03-31 | 2007-10-11 | Advanced Micro Devices, Inc., Sunnyvale | Technique for providing voltage sources in MOS transistors in close proximity to a channel region |
US7510926B2 (en) | 2006-03-31 | 2009-03-31 | Advanced Micro Devices, Inc. | Technique for providing stress sources in MOS transistors in close proximity to a channel region |
Also Published As
Publication number | Publication date |
---|---|
TWI243423B (en) | 2005-11-11 |
CN1585128A (en) | 2005-02-23 |
US7338874B2 (en) | 2008-03-04 |
JP2005072577A (en) | 2005-03-17 |
KR100546369B1 (en) | 2006-01-26 |
TW200509259A (en) | 2005-03-01 |
US20050040472A1 (en) | 2005-02-24 |
CN100431152C (en) | 2008-11-05 |
US7098514B2 (en) | 2006-08-29 |
US20060255413A1 (en) | 2006-11-16 |
KR20050020382A (en) | 2005-03-04 |
DE102004041066B4 (en) | 2016-03-03 |
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